diff --git a/webpack.config.js b/webpack.config.js
index acd6e80..bfaa095 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -15,6 +15,7 @@ module.exports = {
   },
   plugins: [
     new webpack.optimize.UglifyJsPlugin({
+      sourceMap: true,
       compress: {
         warnings: false
       }